Nyall Dawson ae00eb965c [FEATURE] Allow expression functions to use named parameters ...

This commit sets the framework for allowing expression functions to
use named parameters. Ie, instead of:

clamp(1,2,3)

you can use:

clamp( min:=1, value:=2, max:=3)

This also allows arguments to be switched, eg:

clamp( value:=2, max:=3, min:=1)

Additionally, it allows for a more structured definition of function
parameters to handle optional arguments and default values for
parameters. These are currently being done using a hacky infinite
argument list.

I've utilised the postgres ':=' syntax for specifying named arguments
to avoid potential collisions which may arise with the equality test
if we re-used just the '=' operator alone.

Sponsored by North Road

2016-04-04 13:59:13 +10:00

..

$area

More descriptive function help for area/length/perimeter functions

2016-02-23 11:48:10 +11:00

$atlasfeature

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$atlasfeatureid

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$atlasgeometry

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$currentfeature

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$feature

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$geometry

move remaining function_help to json and update it's translation handling

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$id

move remaining function_help to json and update it's translation handling

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$length

More descriptive function help for area/length/perimeter functions

2016-02-23 11:48:10 +11:00

$map

move remaining function_help to json and update it's translation handling

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$numfeatures

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$numpages

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$page

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$perimeter

More descriptive function help for area/length/perimeter functions

2016-02-23 11:48:10 +11:00

$rownum

move remaining function_help to json and update it's translation handling

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$scale

fix linebreaks in function help and CASE (fixes #14189)

2016-02-26 00:27:48 +01:00

$x

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$x_at

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$y

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$y_at

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abs

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acos

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age

fix linebreaks in function help and CASE (fixes #14189)

2016-02-26 00:27:48 +01:00

AND

move remaining function_help to json and update it's translation handling

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area

More descriptive function help for area/length/perimeter functions

2016-02-23 11:48:10 +11:00

asin

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atan

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atan2

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attribute

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azimuth

[FEATURE] Allow expression functions to use named parameters

2016-04-04 13:59:13 +10:00

bounds

move remaining function_help to json and update it's translation handling

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bounds_height

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bounds_width

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buffer

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CASE

fix linebreaks in function help and CASE (fixes #14189)

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ceil

move remaining function_help to json and update it's translation handling

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centroid

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clamp

move remaining function_help to json and update it's translation handling

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closest_point

[FEATURE] Add closest_point and shortest_line expression functions

2016-01-15 12:50:17 +11:00

coalesce

move remaining function_help to json and update it's translation handling

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Color

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color_cmyk

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color_cmyka

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color_hsl

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color_hsla

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color_hsv

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color_hsva

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

color_part

Port from expressions+ plugin: color_part, set_color_part, day_of_week

2015-09-21 19:57:58 +10:00

color_rgb

move remaining function_help to json and update it's translation handling

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color_rgba

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combine

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concat

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Conditionals

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Conditions

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contains

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Conversions

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convex_hull

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cos

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crosses

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Custom

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darker

[FEATURE] add darker() and lighter() expression functions

2015-12-09 15:50:59 +11:00

Date and Time

move remaining function_help to json and update it's translation handling

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day

move remaining function_help to json and update it's translation handling

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day_of_week

Port from expressions+ plugin: color_part, set_color_part, day_of_week

2015-09-21 19:57:58 +10:00

degrees

[Expression] radians and degrees

2015-12-10 00:41:42 +01:00

difference

move remaining function_help to json and update it's translation handling

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disjoint

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distance

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end_point

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eval

[FEATURE] Add an eval expression

2015-12-08 08:43:45 +01:00

exp

move remaining function_help to json and update it's translation handling

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exterior_ring

[FEATURE] exterior_ring function for expressions

2015-12-13 20:11:19 +11:00

extrude

Add extrude function to QgsGeometry

2016-01-14 12:28:31 +01:00

Field

fix linebreaks in function help and CASE (fixes #14189)

2016-02-26 00:27:48 +01:00

Fields and Values

fix linebreaks in function help and CASE (fixes #14189)

2016-02-26 00:27:48 +01:00

floor

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format

move remaining function_help to json and update it's translation handling

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format_date

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format_number

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Fuzzy Matching

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General

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geom_from_gml

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geom_from_wkt

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geom_to_wkt

move remaining function_help to json and update it's translation handling

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geometry

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

geometry_n

[FEATURE] More geometry functions for expressions

2015-12-15 11:22:39 +11:00

GeometryGroup

move remaining function_help to json and update it's translation handling

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get_feature

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hamming_distance

move remaining function_help to json and update it's translation handling

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hour

move remaining function_help to json and update it's translation handling

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if

Fix expression "if" documentation

2016-03-31 13:13:32 +02:00

ILIKE

move remaining function_help to json and update it's translation handling

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IN

move remaining function_help to json and update it's translation handling

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interior_ring_n

[FEATURE] More geometry functions for expressions

2015-12-15 11:22:39 +11:00

intersection

move remaining function_help to json and update it's translation handling

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intersects

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intersects_bbox

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IS

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IS NOT

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is_closed

[FEATURE] is_closed function for expressions

2015-12-13 22:06:22 +11:00

layer_property

move remaining function_help to json and update it's translation handling

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left

move remaining function_help to json and update it's translation handling

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length

More descriptive function help for area/length/perimeter functions

2016-02-23 11:48:10 +11:00

levenshtein

move remaining function_help to json and update it's translation handling

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lighter

[FEATURE] add darker() and lighter() expression functions

2015-12-09 15:50:59 +11:00

LIKE

move remaining function_help to json and update it's translation handling

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ln

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log

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log10

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longest_common_substring

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lower

move remaining function_help to json and update it's translation handling

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lpad

fix lpad/rpad context help (followup b46cbbe)

2015-09-27 01:52:20 +02:00

m

[expressions] Allow make_point to accept z/m values, add new

2015-11-06 20:09:13 +11:00

make_line

[expressions] Add make_line and make_polygon functions

2015-11-06 20:09:48 +11:00

make_point

[expressions] Allow make_point to accept z/m values, add new

2015-11-06 20:09:13 +11:00

make_point_m

[expressions] Allow make_point to accept z/m values, add new

2015-11-06 20:09:13 +11:00

make_polygon

[expressions] Add make_line and make_polygon functions

2015-11-06 20:09:48 +11:00

Math

move remaining function_help to json and update it's translation handling

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max

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min

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minute

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month

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nodes_to_points

[FEATURE] More geometry functions for expressions

2015-12-15 11:22:39 +11:00

NOT

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now

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NULL

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num_geometries

[FEATURE] More geometry functions for expressions

2015-12-15 11:22:39 +11:00

num_interior_rings

[FEATURE] More geometry functions for expressions

2015-12-15 11:22:39 +11:00

num_points

move remaining function_help to json and update it's translation handling

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num_rings

[FEATURE] More geometry functions for expressions

2015-12-15 11:22:39 +11:00

op_asterisk

move remaining function_help to json and update it's translation handling

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op_concat

fix linebreaks in function help and CASE (fixes #14189)

2016-02-26 00:27:48 +01:00

op_div

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op_eq

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op_exp

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op_ge

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op_gt

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op_le

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op_lt

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op_minus

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op_modulo

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op_ne

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op_plus

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Operators

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OR

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order_parts

Fix 2.5D renderer problem when order of walls matters

2016-01-15 16:23:13 +01:00

overlaps

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

perimeter

More descriptive function help for area/length/perimeter functions

2016-02-23 11:48:10 +11:00

pi

move remaining function_help to json and update it's translation handling

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point_n

move remaining function_help to json and update it's translation handling

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point_on_surface

[expression] add point_on_surface function

2015-12-12 17:16:34 +07:00

project_color

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

radians

[Expression] radians and degrees

2015-12-10 00:41:42 +01:00

ramp_color

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

rand

move remaining function_help to json and update it's translation handling

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randf

[FEATURE] Allow expression functions to use named parameters

2016-04-04 13:59:13 +10:00

Recent

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Record

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regexp_match

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regexp_replace

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regexp_substr

move remaining function_help to json and update it's translation handling

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relate

Add DE-9IM variant which tests against a specified pattern

2015-11-04 16:03:55 +11:00

replace

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

reverse

[FEATURE] New 'reverse' expression for reversing linestrings

2015-11-26 16:53:55 +11:00

right

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

round

[FEATURE] Allow expression functions to use named parameters

2016-04-04 13:59:13 +10:00

rpad

fix lpad/rpad context help (followup b46cbbe)

2015-09-27 01:52:20 +02:00

scale_exp

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

scale_linear

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second

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

segments_to_lines

[FEATURE] More geometry functions for expressions

2015-12-15 11:22:39 +11:00

set_color_part

Port from expressions+ plugin: color_part, set_color_part, day_of_week

2015-09-21 19:57:58 +10:00

shortest_line

[FEATURE] Add closest_point and shortest_line expression functions

2016-01-15 12:50:17 +11:00

sin

move remaining function_help to json and update it's translation handling

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soundex

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sqrt

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start_point

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String

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strpos

also update strpos function help (followup 2a557db)

2015-11-20 19:53:30 +01:00

substr

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sym_difference

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tan

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title

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to_date

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to_datetime

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to_int

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to_interval

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to_real

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to_string

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to_time

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touches

move remaining function_help to json and update it's translation handling

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transform

move remaining function_help to json and update it's translation handling

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translate

[FEATURE] Add translate expression function

2015-12-08 08:49:05 +01:00

trim

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union

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upper

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uuid

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var

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Variables

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week

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within

move remaining function_help to json and update it's translation handling

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wordwrap

fix linebreaks in function help and CASE (fixes #14189)

2016-02-26 00:27:48 +01:00

x

move remaining function_help to json and update it's translation handling

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x_max

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x_min

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y

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y_max

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y_min

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

year

move remaining function_help to json and update it's translation handling

2015-09-20 18:35:27 +02:00

z

[expressions] Allow make_point to accept z/m values, add new

2015-11-06 20:09:13 +11:00